Ms. Liu, 53, started to have symptoms such as chest tightness and dyspnea 1 month ago, and was hospitalized at a local hospital, where she was diagnosed with tracheal stenosis and pneumonia and treated. However, on the third day after admission, Ms. Liu suddenly became unconscious and underwent main bronchial stenting in the interventional department, after which she became conscious, but her dyspnea was not relieved, so she was given a tracheal intubation, which was removed after her symptoms were relieved. The following day, Ms. Liu again developed dyspnea, and a tracheotomy was performed, and anti-infection and sputum treatment were given, but the results were not good. Half a month ago, Ms. Liu’s symptoms worsened and she went to the emergency room of a local tertiary care hospital, where she was given anti-infection and wheezing treatment, but her dyspnea did not ease. She was referred to our hospital for further consultation and treatment. After admission, tracheoscopic treatment was performed under general anesthesia. A tube of bare stent was seen in the trachea, and a small amount of granulation tissue was seen on the surface of the stent growing into the lumen from the stent gap, and the bilateral main bronchi were stenosed by external pressure. The mesh stent was removed with a rigid microscope, and the granulation was cauterized with an argon knife, and a guide wire was inserted under direct view of the tracheoscope, and a Z-shaped tracheal overlay stent was placed along the guide wire. After the operation, Ms. Liu’s wheezing symptoms were improved. Based on the clinical manifestations and tracheoscopic findings, Ms. Liu was considered to be suffering from tracheomalacia, and was given symptomatic treatment such as anti-infection. Straight mesh bare stent Removal of bare stent Z-type tracheal overlay stent Tracheal chondromalacia is a disease in which the airway becomes soft and collapses easily due to atrophy and reduction of tracheal elastic fibers or damage to the integrity of tracheal cartilage caused by various reasons. The first step in the treatment of tracheobronchial achondroplasia is to determine if the patient with tracheal achondroplasia is symptomatic. Asymptomatic patients generally do not require treatment, while symptomatic patients should be treated individually. Patients who are not suitable for surgical procedures may opt for stent placement, with laminated or silicone stents being placed as an option, and never a bare metal stent.